Example usage for android.text TextWatcher TextWatcher

Introduction

In this page you can find the example usage for android.text TextWatcher TextWatcher.

Prototype

TextWatcher

Source Link

Usage

From source file:ca.rmen.android.scrumchatter.dialog.InputDialogFragment.java

@Override
@NonNull// ww  w  .  j  a  va  2  s .c o  m
public Dialog onCreateDialog(Bundle savedInstanceState) {
    Log.v(TAG, "onCreateDialog: savedInstanceState = " + savedInstanceState);
    if (savedInstanceState != null)
        mEnteredText = savedInstanceState.getString(DialogFragmentFactory.EXTRA_ENTERED_TEXT);
    Bundle arguments = getArguments();
    final int actionId = arguments.getInt(DialogFragmentFactory.EXTRA_ACTION_ID);

    final InputDialogEditTextBinding binding = DataBindingUtil.inflate(LayoutInflater.from(getActivity()),
            R.layout.input_dialog_edit_text, null, false);

    final Bundle extras = arguments.getBundle(DialogFragmentFactory.EXTRA_EXTRAS);
    final Class<?> inputValidatorClass = (Class<?>) arguments
            .getSerializable(DialogFragmentFactory.EXTRA_INPUT_VALIDATOR_CLASS);
    final String prefilledText = arguments.getString(DialogFragmentFactory.EXTRA_ENTERED_TEXT);
    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());

    builder.setTitle(arguments.getString(DialogFragmentFactory.EXTRA_TITLE));
    builder.setView(binding.getRoot());
    binding.edit.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_FLAG_CAP_WORDS);
    binding.edit.setHint(arguments.getString(DialogFragmentFactory.EXTRA_INPUT_HINT));
    binding.edit.setText(prefilledText);
    if (!TextUtils.isEmpty(mEnteredText))
        binding.edit.setText(mEnteredText);

    // Notify the activity of the click on the OK button.
    OnClickListener listener = null;
    if ((getActivity() instanceof DialogInputListener)) {
        listener = (dialog, which) -> {
            FragmentActivity activity = getActivity();
            if (activity == null)
                Log.w(TAG, "User clicked on dialog after it was detached from activity. Monkey?");
            else
                ((DialogInputListener) activity).onInputEntered(actionId, binding.edit.getText().toString(),
                        extras);
        };
    }
    builder.setNegativeButton(android.R.string.cancel, null);
    builder.setPositiveButton(android.R.string.ok, listener);

    final AlertDialog dialog = builder.create();
    // Show the keyboard when the EditText gains focus.
    binding.edit.setOnFocusChangeListener((v, hasFocus) -> {
        if (hasFocus) {
            Window window = dialog.getWindow();
            if (window != null) {
                window.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
            }
        }
    });

    final Context context = getActivity();
    try {
        final InputValidator validator = inputValidatorClass == null ? null
                : (InputValidator) inputValidatorClass.newInstance();
        Log.v(TAG, "input validator = " + validator);
        // Validate the text as the user types.
        binding.edit.addTextChangedListener(new TextWatcher() {

            @Override
            public void afterTextChanged(Editable s) {
            }

            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {
                mEnteredText = binding.edit.getText().toString();
                if (validator != null)
                    validateText(context, dialog, binding.edit, validator, actionId, extras);
            }
        });
        dialog.setOnShowListener(dialogInterface -> {
            Log.v(TAG, "onShow");
            validateText(context, dialog, binding.edit, validator, actionId, extras);
        });
    } catch (Exception e) {
        Log.e(TAG, "Could not instantiate validator " + inputValidatorClass + ": " + e.getMessage(), e);
    }

    return dialog;
}

---

From source file:com.happynetwork.vrestate.activitys.ChatHistoryFragment.java

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    inputMethodManager = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
    errorText = (TextView) errorItem.findViewById(R.id.tv_connect_errormsg);
    // contact list
    contactList = ((DemoHXSDKHelper) HXSDKHelper.getInstance()).getContactList();
    listView = (ListView) getView().findViewById(R.id.list);
    adapter = new ChatHistoryAdapter(getActivity(), 1, loadUsersWithRecentChat());
    // adapter//from   w  w  w .  j  a  v a2s. c o  m
    listView.setAdapter(adapter);
    final String st = getResources().getString(R.string.Cant_chat_with_yourself);
    listView.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            EMContact emContact = adapter.getItem(position);
            if (adapter.getItem(position).getUsername().equals(BaseApplication.getInstance().getUserName()))
                Toast.makeText(getActivity(), st, Toast.LENGTH_SHORT).show();
            else {
                // ??
                Intent intent = new Intent(getActivity(), ChatActivity.class);
                if (emContact instanceof EMGroup) {
                    //it is group chat
                    intent.putExtra("chatType", ChatActivity.CHATTYPE_GROUP);
                    intent.putExtra("groupId", ((EMGroup) emContact).getGroupId());
                } else {
                    //it is single chat
                    intent.putExtra("userId", emContact.getUsername());
                }
                startActivity(intent);
            }
        }
    });
    // ??
    registerForContextMenu(listView);

    listView.setOnTouchListener(new OnTouchListener() {

        @Override
        public boolean onTouch(View v, MotionEvent event) {
            // ??
            if (getActivity().getWindow()
                    .getAttributes().softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN) {
                if (getActivity().getCurrentFocus() != null)
                    inputMethodManager.hideSoftInputFromWindow(getActivity().getCurrentFocus().getWindowToken(),
                            InputMethodManager.HIDE_NOT_ALWAYS);
            }
            return false;
        }
    });
    // ?
    query = (EditText) getView().findViewById(R.id.query);
    // ?button
    clearSearch = (ImageButton) getView().findViewById(R.id.search_clear);
    query.addTextChangedListener(new TextWatcher() {
        public void onTextChanged(CharSequence s, int start, int before, int count) {

            adapter.getFilter().filter(s);
            if (s.length() > 0) {
                clearSearch.setVisibility(View.VISIBLE);
            } else {
                clearSearch.setVisibility(View.INVISIBLE);
            }
        }

        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        }

        public void afterTextChanged(Editable s) {
        }
    });
    clearSearch.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            query.getText().clear();

        }
    });

}

---

From source file:com.app.khclub.base.easeim.activity.ChatHistoryFragment.java

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    inputMethodManager = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
    errorText = (TextView) errorItem.findViewById(R.id.tv_connect_errormsg);
    // contact list
    contactList = ((KHHXSDKHelper) HXSDKHelper.getInstance()).getContactList();
    listView = (ListView) getView().findViewById(R.id.list);
    adapter = new ChatHistoryAdapter(getActivity(), 1, loadUsersWithRecentChat());
    // adapter/*w ww.  j  a va2s.com*/
    listView.setAdapter(adapter);
    final String st = getResources().getString(R.string.Cant_chat_with_yourself);
    listView.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            EMContact emContact = adapter.getItem(position);
            if (adapter.getItem(position).getUsername().equals(KHUtils.selfCommonIMID()))
                Toast.makeText(getActivity(), st, 0).show();
            else {
                // ??
                Intent intent = new Intent(getActivity(), ChatActivity.class);
                if (emContact instanceof EMGroup) {
                    //it is group chat
                    intent.putExtra("chatType", ChatActivity.CHATTYPE_GROUP);
                    intent.putExtra("groupId", ((EMGroup) emContact).getGroupId());
                } else {
                    //it is single chat
                    intent.putExtra("userId", emContact.getUsername());
                }
                startActivity(intent);
            }
        }
    });
    // ??
    registerForContextMenu(listView);

    listView.setOnTouchListener(new OnTouchListener() {

        @Override
        public boolean onTouch(View v, MotionEvent event) {
            // ??
            if (getActivity().getWindow()
                    .getAttributes().softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN) {
                if (getActivity().getCurrentFocus() != null)
                    inputMethodManager.hideSoftInputFromWindow(getActivity().getCurrentFocus().getWindowToken(),
                            InputMethodManager.HIDE_NOT_ALWAYS);
            }
            return false;
        }
    });
    // ?
    query = (EditText) getView().findViewById(R.id.query);
    // ?button
    clearSearch = (ImageButton) getView().findViewById(R.id.search_clear);
    query.addTextChangedListener(new TextWatcher() {
        public void onTextChanged(CharSequence s, int start, int before, int count) {

            adapter.getFilter().filter(s);
            if (s.length() > 0) {
                clearSearch.setVisibility(View.VISIBLE);
            } else {
                clearSearch.setVisibility(View.INVISIBLE);
            }
        }

        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        }

        public void afterTextChanged(Editable s) {
        }
    });
    clearSearch.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            query.getText().clear();

        }
    });

}

---

From source file:com.example.chudong.telescope.activity.ChatHistoryFragment.java

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    inputMethodManager = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
    errorText = (TextView) errorItem.findViewById(R.id.tv_connect_errormsg);
    // contact list
    contactList = ((DemoHXSDKHelper) HXSDKHelper.getInstance()).getContactList();
    listView = (ListView) getView().findViewById(R.id.list);
    adapter = new ChatHistoryAdapter(getActivity(), 1, loadUsersWithRecentChat());
    // adapter//from ww  w.  j  a  v  a2s. co m
    listView.setAdapter(adapter);
    final String st = getResources().getString(R.string.Cant_chat_with_yourself);
    listView.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            EMContact emContact = adapter.getItem(position);
            if (adapter.getItem(position).getUsername().equals(MyApplication.getInstance().getUserName()))
                Toast.makeText(getActivity(), st, Toast.LENGTH_SHORT).show();
            else {
                // ??
                Intent intent = new Intent(getActivity(), ChatActivity.class);
                if (emContact instanceof EMGroup) {
                    //it is group chat
                    intent.putExtra("chatType", ChatActivity.CHATTYPE_GROUP);
                    intent.putExtra("groupId", ((EMGroup) emContact).getGroupId());
                } else {
                    //it is single chat
                    intent.putExtra("userId", emContact.getUsername());
                }
                startActivity(intent);
            }
        }
    });
    // ??
    registerForContextMenu(listView);

    listView.setOnTouchListener(new OnTouchListener() {

        @Override
        public boolean onTouch(View v, MotionEvent event) {
            // ??
            if (getActivity().getWindow()
                    .getAttributes().softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN) {
                if (getActivity().getCurrentFocus() != null)
                    inputMethodManager.hideSoftInputFromWindow(getActivity().getCurrentFocus().getWindowToken(),
                            InputMethodManager.HIDE_NOT_ALWAYS);
            }
            return false;
        }
    });
    // ?
    query = (EditText) getView().findViewById(R.id.query);
    // ?button
    clearSearch = (ImageButton) getView().findViewById(R.id.search_clear);
    query.addTextChangedListener(new TextWatcher() {
        public void onTextChanged(CharSequence s, int start, int before, int count) {

            adapter.getFilter().filter(s);
            if (s.length() > 0) {
                clearSearch.setVisibility(View.VISIBLE);
            } else {
                clearSearch.setVisibility(View.INVISIBLE);
            }
        }

        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        }

        public void afterTextChanged(Editable s) {
        }
    });
    clearSearch.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            query.getText().clear();

        }
    });

}

---

From source file:com.easemob.appstoremedical.activity.ChatHistoryFragment.java

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    inputMethodManager = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
    errorText = (TextView) errorItem.findViewById(R.id.tv_connect_errormsg);
    // contact list
    contactList = ((DemoHXSDKHelper) HXSDKHelper.getInstance()).getContactList();
    listView = (ListView) getView().findViewById(R.id.list);
    adapter = new ChatHistoryAdapter(getActivity(), 1, loadUsersWithRecentChat());
    // adapter/*  www  .j  a v a2s .c  o m*/
    listView.setAdapter(adapter);
    final String st = getResources().getString(R.string.Cant_chat_with_yourself);
    listView.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            EMContact emContact = adapter.getItem(position);
            if (adapter.getItem(position).getUsername()
                    .equals(AppMedicalApplication.getInstance().getUserName()))
                Toast.makeText(getActivity(), st, 0).show();
            else {
                // ??
                Intent intent = new Intent(getActivity(), ChatActivity.class);
                if (emContact instanceof EMGroup) {
                    //it is group chat
                    intent.putExtra("chatType", ChatActivity.CHATTYPE_GROUP);
                    intent.putExtra("groupId", ((EMGroup) emContact).getGroupId());
                } else {
                    //it is single chat
                    intent.putExtra("userId", emContact.getUsername());
                }
                startActivity(intent);
            }
        }
    });
    // ??
    registerForContextMenu(listView);

    listView.setOnTouchListener(new OnTouchListener() {

        @Override
        public boolean onTouch(View v, MotionEvent event) {
            // ??
            if (getActivity().getWindow()
                    .getAttributes().softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN) {
                if (getActivity().getCurrentFocus() != null)
                    inputMethodManager.hideSoftInputFromWindow(getActivity().getCurrentFocus().getWindowToken(),
                            InputMethodManager.HIDE_NOT_ALWAYS);
            }
            return false;
        }
    });
    // ?
    query = (EditText) getView().findViewById(R.id.query);
    // ?button
    clearSearch = (ImageButton) getView().findViewById(R.id.search_clear);
    query.addTextChangedListener(new TextWatcher() {
        public void onTextChanged(CharSequence s, int start, int before, int count) {

            adapter.getFilter().filter(s);
            if (s.length() > 0) {
                clearSearch.setVisibility(View.VISIBLE);
            } else {
                clearSearch.setVisibility(View.INVISIBLE);
            }
        }

        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        }

        public void afterTextChanged(Editable s) {
        }
    });
    clearSearch.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            query.getText().clear();

        }
    });

}

---

From source file:com.giovanniterlingen.windesheim.view.Fragments.ChooseScheduleFragment.java

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    view = inflater.inflate(R.layout.fragment_choose_schedule, container, false);
    TextView chooseTextview = view.findViewById(R.id.choose_textview);
    TextView descriptionTextview = view.findViewById(R.id.description_textview);
    EditText dataSearch = view.findViewById(R.id.filter_edittext);
    if (type == 1) {
        chooseTextview.setText(getResources().getString(R.string.choose_class));
        descriptionTextview.setText(getResources().getString(R.string.choose_class_description));
        dataSearch.setHint(getResources().getString(R.string.choose_class_hint));
    }/*from   w w  w.j a  v  a2s .c  o  m*/
    if (type == 2) {
        chooseTextview.setText(getResources().getString(R.string.choose_teacher));
        descriptionTextview.setText(getResources().getString(R.string.choose_teacher_description));
        dataSearch.setHint(getResources().getString(R.string.choose_teacher_hint));
    }
    if (type == 3) {
        chooseTextview.setText(getResources().getString(R.string.choose_subject));
        descriptionTextview.setText(getResources().getString(R.string.choose_subject_description));
        dataSearch.setHint(getResources().getString(R.string.choose_subject_hint));
    }
    recyclerView = view.findViewById(R.id.recyclerview);
    recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
    spinner = view.findViewById(R.id.progress_bar);
    dataSearch.addTextChangedListener(new TextWatcher() {
        public void onTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {
            if (adapter != null) {
                adapter.filter(arg0.toString());
            }
        }

        public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {
        }

        public void afterTextChanged(Editable s) {
        }
    });
    if (!isViewShown) {
        startTask();
    }
    return view;
}

---

From source file:com.lanou.lovemovie.dock.chat.HXChat.activity.ChatHistoryFragment.java

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    inputMethodManager = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
    errorText = (TextView) errorItem.findViewById(R.id.tv_connect_errormsg);
    // contact list
    contactList = ((DemoHXSDKHelper) HXSDKHelper.getInstance()).getContactList();
    listView = (ListView) getView().findViewById(R.id.list);
    adapter = new ChatHistoryAdapter(getActivity(), 1, loadUsersWithRecentChat());
    // adapter//  w  w w  . ja  va  2  s  .c  o  m
    listView.setAdapter(adapter);
    final String st = getResources().getString(R.string.Cant_chat_with_yourself);
    listView.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            EMContact emContact = adapter.getItem(position);
            if (adapter.getItem(position).getUsername().equals(AppApplication.getInstance().getUserName()))
                Toast.makeText(getActivity(), st, 0).show();
            else {
                // ??
                Intent intent = new Intent(getActivity(), ChatActivity.class);
                if (emContact instanceof EMGroup) {
                    //it is group chat
                    intent.putExtra("chatType", ChatActivity.CHATTYPE_GROUP);
                    intent.putExtra("groupId", ((EMGroup) emContact).getGroupId());
                } else {
                    //it is single chat
                    intent.putExtra("userId", emContact.getUsername());
                }
                startActivity(intent);
            }
        }
    });
    // ??
    registerForContextMenu(listView);

    listView.setOnTouchListener(new OnTouchListener() {

        @Override
        public boolean onTouch(View v, MotionEvent event) {
            // ??
            if (getActivity().getWindow()
                    .getAttributes().softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN) {
                if (getActivity().getCurrentFocus() != null)
                    inputMethodManager.hideSoftInputFromWindow(getActivity().getCurrentFocus().getWindowToken(),
                            InputMethodManager.HIDE_NOT_ALWAYS);
            }
            return false;
        }
    });
    // ?
    query = (EditText) getView().findViewById(R.id.query);
    // ?button
    clearSearch = (ImageButton) getView().findViewById(R.id.search_clear);
    query.addTextChangedListener(new TextWatcher() {
        public void onTextChanged(CharSequence s, int start, int before, int count) {

            adapter.getFilter().filter(s);
            if (s.length() > 0) {
                clearSearch.setVisibility(View.VISIBLE);
            } else {
                clearSearch.setVisibility(View.INVISIBLE);
            }
        }

        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        }

        public void afterTextChanged(Editable s) {
        }
    });
    clearSearch.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            query.getText().clear();

        }
    });

}

---

From source file:cn.ucai.yizhesale.activity.ChatHistoryFragment.java

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    inputMethodManager = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
    errorText = (TextView) errorItem.findViewById(cn.ucai.yizhesale.R.id.tv_connect_errormsg);
    // contact list
    contactList = ((DemoHXSDKHelper) HXSDKHelper.getInstance()).getContactList();
    listView = (ListView) getView().findViewById(cn.ucai.yizhesale.R.id.list);
    adapter = new ChatHistoryAdapter(getActivity(), 1, loadUsersWithRecentChat());
    // adapter//  w w w  .  j  a  v a 2 s  . com
    listView.setAdapter(adapter);
    final String st = getResources().getString(cn.ucai.yizhesale.R.string.Cant_chat_with_yourself);
    listView.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            EMContact emContact = adapter.getItem(position);
            if (adapter.getItem(position).getUsername()
                    .equals(YiZheSaleApplication.getInstance().getUserName()))
                Toast.makeText(getActivity(), st, Toast.LENGTH_SHORT).show();
            else {
                // ??
                Intent intent = new Intent(getActivity(), ChatActivity.class);
                if (emContact instanceof EMGroup) {
                    //it is group chat
                    intent.putExtra("chatType", ChatActivity.CHATTYPE_GROUP);
                    intent.putExtra("groupId", ((EMGroup) emContact).getGroupId());
                } else {
                    //it is single chat
                    intent.putExtra("userId", emContact.getUsername());
                }
                startActivity(intent);
            }
        }
    });
    // ??
    registerForContextMenu(listView);

    listView.setOnTouchListener(new OnTouchListener() {

        @Override
        public boolean onTouch(View v, MotionEvent event) {
            // ??
            if (getActivity().getWindow()
                    .getAttributes().softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN) {
                if (getActivity().getCurrentFocus() != null)
                    inputMethodManager.hideSoftInputFromWindow(getActivity().getCurrentFocus().getWindowToken(),
                            InputMethodManager.HIDE_NOT_ALWAYS);
            }
            return false;
        }
    });
    // ?
    query = (EditText) getView().findViewById(cn.ucai.yizhesale.R.id.query);
    // ?button
    clearSearch = (ImageButton) getView().findViewById(cn.ucai.yizhesale.R.id.search_clear);
    query.addTextChangedListener(new TextWatcher() {
        public void onTextChanged(CharSequence s, int start, int before, int count) {

            adapter.getFilter().filter(s);
            if (s.length() > 0) {
                clearSearch.setVisibility(View.VISIBLE);
            } else {
                clearSearch.setVisibility(View.INVISIBLE);
            }
        }

        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        }

        public void afterTextChanged(Editable s) {
        }
    });
    clearSearch.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            query.getText().clear();

        }
    });

}

---

From source file:com.jecelyin.android.file_explorer.FileListPagerFragment.java

@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
    action = new FileExplorerAction(getContext(), this,
            ((FileExplorerActivity) getActivity()).getFileClipboard(), this);
    adapter = new FileListItemAdapter();
    adapter.setOnCheckedChangeListener(action);
    adapter.setOnItemClickListener(this);
    adapter.registerAdapterDataObserver(new RecyclerView.AdapterDataObserver() {
        @Override/* w  ww. ja v a  2 s . c  o m*/
        public void onChanged() {
            binding.emptyLayout.post(new Runnable() {
                @Override
                public void run() {
                    binding.emptyLayout.setVisibility(adapter.getItemCount() > 0 ? View.GONE : View.VISIBLE);
                }
            });

        }
    });

    binding.pathScrollView
            .setLayoutManager(new LinearLayoutManager(getContext(), LinearLayoutManager.HORIZONTAL, false));
    pathAdapter = new PathButtonAdapter();
    pathAdapter.registerAdapterDataObserver(new RecyclerView.AdapterDataObserver() {
        @Override
        public void onChanged() {
            binding.pathScrollView.scrollToPosition(pathAdapter.getItemCount() - 1);
        }
    });
    pathAdapter.setPath(path);
    pathAdapter.setOnItemClickListener(new OnItemClickListener() {
        @Override
        public void onItemClick(int position, View view) {
            JecFile file = pathAdapter.getItem(position);
            switchToPath(file);
        }
    });
    binding.pathScrollView.setAdapter(pathAdapter);

    binding.explorerSwipeRefreshLayout.setOnRefreshListener(this);
    binding.recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
    binding.recyclerView.setAdapter(adapter);
    binding.recyclerView.addItemDecoration(new HorizontalDividerItemDecoration.Builder(getContext())
            .margin(getResources().getDimensionPixelSize(R.dimen.file_list_item_divider_left_margin), 0)
            .build());
    binding.explorerSwipeRefreshLayout.post(new Runnable() {
        @Override
        public void run() {
            binding.explorerSwipeRefreshLayout.setRefreshing(true);
        }
    });
    binding.nameFilterEditText.addTextChangedListener(new TextWatcher() {
        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {

        }

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
            adapter.filter(s);
        }

        @Override
        public void afterTextChanged(Editable s) {

        }
    });

    onRefresh();

    Pref.getInstance(getContext()).registerOnSharedPreferenceChangeListener(this);
}

---

From source file:cn.ucai.fulicenter.fragment.ChatHistoryFragment.java

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    inputMethodManager = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
    errorText = (TextView) errorItem.findViewById(R.id.tv_connect_errormsg);
    // contact list
    contactList = ((DemoHXSDKHelper) HXSDKHelper.getInstance()).getContactList();
    listView = (ListView) getView().findViewById(R.id.list);
    adapter = new ChatHistoryAdapter(getActivity(), 1, loadUsersWithRecentChat());
    // adapter//ww  w.  ja  va2s . c  o m
    listView.setAdapter(adapter);
    final String st = getResources().getString(R.string.Cant_chat_with_yourself);
    listView.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            EMContact emContact = adapter.getItem(position);
            if (adapter.getItem(position).getUsername()
                    .equals(FuLiCenterApplication.getInstance().getUserName()))
                Toast.makeText(getActivity(), st, Toast.LENGTH_SHORT).show();
            else {
                // ??
                Intent intent = new Intent(getActivity(), ChatActivity.class);
                if (emContact instanceof EMGroup) {
                    //it is group chat
                    intent.putExtra("chatType", ChatActivity.CHATTYPE_GROUP);
                    intent.putExtra("groupId", ((EMGroup) emContact).getGroupId());
                } else {
                    //it is single chat
                    intent.putExtra("userId", emContact.getUsername());
                }
                startActivity(intent);
            }
        }
    });
    // ??
    registerForContextMenu(listView);

    listView.setOnTouchListener(new OnTouchListener() {

        @Override
        public boolean onTouch(View v, MotionEvent event) {
            // ??
            if (getActivity().getWindow()
                    .getAttributes().softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN) {
                if (getActivity().getCurrentFocus() != null)
                    inputMethodManager.hideSoftInputFromWindow(getActivity().getCurrentFocus().getWindowToken(),
                            InputMethodManager.HIDE_NOT_ALWAYS);
            }
            return false;
        }
    });
    // ?
    query = (EditText) getView().findViewById(R.id.query);
    // ?button
    clearSearch = (ImageButton) getView().findViewById(R.id.search_clear);
    query.addTextChangedListener(new TextWatcher() {
        public void onTextChanged(CharSequence s, int start, int before, int count) {

            adapter.getFilter().filter(s);
            if (s.length() > 0) {
                clearSearch.setVisibility(View.VISIBLE);
            } else {
                clearSearch.setVisibility(View.INVISIBLE);
            }
        }

        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        }

        public void afterTextChanged(Editable s) {
        }
    });
    clearSearch.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            query.getText().clear();

        }
    });

}

---

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